Patent US5296390A successfully refreshed from Google Patents.
Patent US3429074A successfully refreshed from Google Patents.
Patent EP0168226A2 successfully refreshed from Google Patents.
EP0168226A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Ultra-violet light curable compositions for abrasion resistant articles
Assignee: 3M Co
•
Filing: 1985-07-05
•
Granted: —
•
Expires: 2005-07-05
Abstract
Abstract Inherently highly abrasion-resistant cast articles are prepared by polymerizing a composition comprising (I) as a first component from 0 to 100 parts of urethane polyacrylic ester and (II) as a second component, correspondingly from 100 to 0 parts of a composition containing (A) 45 to 60% by weight of a polyacrylic ester having 4 to 10 acryloyloxy groups, (B) 20 to 55% by weight of a polymerization shrinkage modifier, and (C) 0 to 30% of a diluent monomer. A source of free-radicals may be added to the composition.
Inventors
- 👤 Ramon F. Hegel
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 22:29
CPC Classifications
G; G02; G02B; G02B1/00; G02B1/04; C; C08; C08F; C08F222/00; C08F222/10; C08F222/1006; C08F222/103; C08F222/104; C08F299/00; C08F299/02; C08F299/022; C08F299/06; G02B1/041
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
20 words
An article comprising a polymerized resin having an inherent abrasion resistance to 000 steel wool of at least 14 Pascals.
Claim 2
Dependent Claim
20 words
An article comprising a polymerized resin having an inherent abrasion resistance to 000 steel wool of at least 14 Pascals.
Claim 3
Dependent Claim
90 words
An article according to claim 1 wherein said polymerized resin is derived from (I) 0 to 100 parts by weight of a urethane polyacrylic ester, (II) correspondingly from 100 to 0 parts by weight of a composition containing (A) from 45 to 60% by weight of a polyacrylic ester, (B) from 20 to 55% by weight of a polymerization shrinkage modifier, and (C) from 0 to 30% by weight of a.diluent monomer, and (III) from 0 to 5% by weight of I plus II of a source of free radicals.
Claim 4
Dependent Claim
22 words
An article according to claim 2 wherein said polymerized resin is derived from 100 parts by weight of said urethane polyacrylic ester.
Claim 5
Dependent Claim
85 words
An article according to claim 3 wherein said urethane polyacrylic ester has the formula wherein: R 1 has the valance "a" and is the residue remaining after the removal of -NCO groups from an organic polyisocyanate; R 2 has the valance b + 1 and is a polyvalent aliphatic group having 4 to 10 carbon atoms; R3 is - H or -C H 3 ; a is a number having a value of at least 2; and b is an integer of 3 to 5.
Claim 6
Dependent Claim
20 words
An article according to claim 2 wherein said polymerized resin is derived from 100 parts by weight of component II.
Claim 7
Dependent Claim
56 words
An article according to claim 5 wherein said component II ( A ) is derived from an alkane, a cycloalkane, or an azacycloalkane polyol, the polyol having up to 24 carbon atoms and the ester having from 4 to 10 acrylocy groups and nitrogen, when present, being covalently bonded to the carbon of a carbonyl group.
Claim 8
Dependent Claim
44 words
An article according to claim 5 wherein said polymerization shrinkage modifier is a polymerizable carbamic compound having at least two of and groups and at least two acrylic groups per 168 to 2000 of molecular weight and a molecular weight of 168 to 5000.
Claim 9
Dependent Claim
95 words
An article according to claim 7 wherein said carbamic compound has the formula in which: R 3 is-H or-CH 3 ; R 4 is a divalent aliphatic group selected from - R 6- and -COR 6 -, in which -R 6- is an alkylene group having 1 to 6 carbon atoms or a 5- or 6-membered cycloalkylene group having 5 to 10 carbon atoms; R 5 is a polyvalent linear structure obtained by removal of the hydroxyl groups from a monomeric or polymeric aliphatic polyol; and c is an integer of from 2 to 15.
Claim 10
Dependent Claim
81 words
An article according to claim 7 wherein said carbamic compound has the formula in which: R 7 is polyvalent aliphatic group selected from R 6 and 0 R 6 -NHCOR 11 in which R 6 is as defined for Formula II and R 11 has a valence of g + 1 and is a polyvalent aliphatic group having 4 to 10 carbon atoms (preferably 5 carbon atoms) and, optionally, one catenary oxygen atom; g is an integer of 1 to 3.
Claim 11
Dependent Claim
62 words
An article according to claim 7 wherein said carbamic compound in which the polymerization shrinkage modifier has the formula wherein: R 3 is -H or -CH 3 : R 8 is a linear, branched, or cyclic alkadiyl or -triyl group having 2 to 10 carbon atoms and, optionally, up to 4 caternary oxygen atoms; and d is the integer 2 or 3.
Claim 12
Dependent Claim
131 words
An article according to claim 2 wherein said polymerization shrinkage modifier has the formula in which: R 3 is -H or -CH 3 : R 4 is a divalent aliphatic group selected from O -R 6- and -COR 6- , in which -R 6- is an alkylene group having 1 to 6 carbon atoms or a 5-6-membered cycloalkylene group having 5 to 10 carbon atoms; R 9 is alkylene having from 2 to 4 carbon atoms; e is a number having a value of 1 to 3; f is an integer of from 3 to 6; and R 10 is a residue of an alkane, cycloalkane, or azacycloalkane polyol having up to 24 carbon atoms and the nitrogen of the azacycloalkane being covalently bonded to the carbon of a carbonyl group.
Claim 13
Dependent Claim
21 words
An article according to claim 4 wherein said urethane polyacrylate ester is the reaction product of a polyacryloyloxyalkanol and a polyisocyanate.
Claim 14
Dependent Claim
19 words
An article according to claim 12 wherein said polyacryloyloxalkanol is pentaerythritol triacrylate or methacrylate and the polyisocyanate is 1,3,5-tris(6-isocyanatohexyl)-1,3,5-triazine-2,4,6-(lH,3H,5H)trione.
Claim 15
Dependent Claim
23 words
An article according to claim 4 wherein said urethane polyacrylic ester is the reaction product of pentaerythritol triacrylate or methacrylate and a diisocyanate.
Claim 16
Dependent Claim
13 words
An article according to claim 8 wherein said carbamic compound is 1,3,5-tris(2-acryloyl- oxyethyl)isocyanurate.
Claim 17
Dependent Claim
8 words
An ophthalmic lens in accordance with claim 1.
Claim 18
Dependent Claim
22 words
An opthalmic lens having an inherent abrasion resistance to 000 steel wool of at least 14 Pascals comprising optically clear polymerized resin.
Claim 19
Dependent Claim
22 words
An opthalmic lens having an inherent abrasion resistance to 000 steel wool of at least 14 Pascals comprising optically clear polymerized resin.
Claim 20
Dependent Claim
17 words
An opthalmic lens according to claim 17 having an index of refraction of from 1.45 to 1.75.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.